*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}
.container{
    width: 352px;
    margin: auto;
}
h2 {
    text-align: center;
    margin-bottom: 20px;
}
.week,.day{
    display: flex;
    width: 352px;
    flex-wrap: wrap;
    border: 1px solid #999;
}
span{
    line-height: 50px;
    text-align: center;
    width: 50px;
    height: 50px;
    box-shadow: 1px 1px 1px #999;
}
.h{
    color: #999;
}
.today{
    background: #0089ff;
    color: white;
}